p. 9929 - 9945
(2013/01/16)(2010/11/23)
3-benzyl-3-azaspirobicyclo[3.3.1]nonane-7,2′-[1,3]dioxolane
1,4-dioxaspiro[4,5]decane-7,9-dicarbaldehyde
dimethyl 5-oxocyclohexane-1,3-dicarboxylate
spiro[7-azabicyclo[3.3.1]nonane-3.2'-[1,3]dioxolane]
1,4-dioxa-spiro[4.5]decane-7,9-dicarboxylic acid dimethyl ester